Four layers which is made of WHO’s recommended fabric mask materials.
The outer layer of blue non-woven fabric exposed to the environment;
The second layer of white non-woven fabric (length size of 17.5cm);
The third one of meltblown fighting against bacteria and fungi as well as prevent from dust and pollutants, BFE ±92%;
The innermost layer (or the fourth one) of white soft non-woven fabric touches directly to facial skin.
1 Box = 50pcs
1 Package = 25 boxs